#!/bin/sh#set -vx# Copyright 2005, Jeff Kinz, License is GPL. see below#http://www.gnu.org/licenses/gpl.txtif [ $# = 0 -o $# = 1 -o $1 = '-h' -o $1 = '-H' -o $1 = '--help' -o $1 = '-?' ] ; then cat <<SE1USAGE nthday: Used to: allow cron to run a program on the second Monday of each month, eg, run a command on the 1st, 2nd, 3rd, 4th, or 5th occurrence of any weekday in a given month. Example: run 'foo blah' on 3rd Monday of any month at 1AM 0 1 * * mon /usr/local/bin/nthday 3 foo blah Syntax: $0 <1|2|3|4|5> <command string, escape special chars or quote> SE1 exitfinthday=$1shiftif [ $(( ( ( `date +%d` - 1 ) / 7 ) + 1 )) = $nthday ] ; then echo "executing $*" $*fi# # GNU GENERAL PUBLIC LICENSE# Version 2, June 1991# # Copyright (C) 1989, 1991 Free Software Foundation, Inc.# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA# Everyone is permitted to copy and distribute verbatim copies# of this license document, but changing it is not allowed.# # Preamble# # The licenses for most software are designed to take away your# freedom to share and change it. By contrast, the GNU General Public# License is intended to guarantee your freedom to share and change free# software--to make sure the software is free for all its users. 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It is safest# to attach them to the start of each source file to most effectively# convey the exclusion of warranty; and each file should have at least# the "copyright" line and a pointer to where the full notice is found.# # <one line to give the program's name and a brief idea of what it does.># Copyright (C) <year> <name of author># # This program is free software; you can redistribute it and/or modify# it under the terms of the GNU General Public License as published by# the Free Software Foundation; either version 2 of the License, or# (at your option) any later version.# # This program is distributed in the hope that it will be useful,# but WITHOUT ANY WARRANTY; without even the implied warranty of# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# GNU General Public License for more details.# # You should have received a copy of the GNU General Public License# along with this program; if not, write to the Free Software# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA# # # Also add information on how to contact you by electronic and paper mail.# # If the program is interactive, make it output a short notice like this# when it starts in an interactive mode:# # Gnomovision version 69, Copyright (C) year name of author# Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.# This is free software, and you are welcome to redistribute it# under certain conditions; type `show c' for details.# # The hypothetical commands `show w' and `show c' should show the appropriate# parts of the General Public License. Of course, the commands you use may# be called something other than `show w' and `show c'; they could even be# mouse-clicks or menu items--whatever suits your program.# # You should also get your employer (if you work as a programmer) or your# school, if any, to sign a "copyright disclaimer" for the program, if# necessary. Here is a sample; alter the names:# # Yoyodyne, Inc., hereby disclaims all copyright interest in the program# `Gnomovision' (which makes passes at compilers) written by James Hacker.# # <signature of Ty Coon>, 1 April 1989# Ty Coon, President of Vice# # This General Public License does not permit incorporating your program into# proprietary programs. If your program is a subroutine library, you may# consider it more useful to permit linking proprietary applications with the# library. If this is what you want to do, use the GNU Library General# Public License instead of this License.